import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '@/components/Login.vue'
import Home from '@/components/Home.vue'
import Welcome from '@/components/Welcome.vue'
import Users from '@/components/user/Users.vue'
import Rights from '@/components/power/Rights.vue'
import Roles from '@/components/power/Roles.vue'
import Cate from '@/components/goods/Cate.vue'
import Params from '@/components/goods/Params.vue'
import GoodsList from '@/components/goods/List.vue'
import AddPage from '@/components/goods/Add.vue'
import Order from '@/components/order/Order.vue'
import Report from '@/components/report/Report.vue'
Vue.use(VueRouter)

const routes = [
  {
    path: '/',
    redirect: '/login'
    // 重定向到登录页面
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home,
    redirect: '/welcome',
    children: [
      {
        path: '/welcome',
        component: Welcome
      },
      {
        path: '/users',
        component: Users
      },
      {
        path: '/rights',
        component: Rights
      },
      {
        path: '/roles',
        component: Roles
      },
      {
        path: '/categories',
        component: Cate
      },
      {
        path: '/params',
        component: Params
      },
      {
        path: '/goods',
        component: GoodsList
      },
      {
        path: '/goods/add',
        component: AddPage
      },
      {
        path: '/orders',
        component: Order
      },
      {
        path: '/reports',
        component: Report
      }
    ]
  }
]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫 控制权限访问 没有登录时不能访问其他页面
router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // from代表从哪个路径跳转而来
  // next 是一个函数，表示放行 next()放行 next(' /login')强制跳转
  if (to.path === '/login') next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  // 没有token就跳转到登录页面
  if (!tokenStr) return next('/login')
  // 既不是跳转登录页面 也有token信息就放行
  next()
})
export default router
